/*******************************************************************************
 * Copyright (c) 2005, 2010 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Anton Leherbauer (Wind River Systems)
 *******************************************************************************/
package org.eclipse.cdt.ui.tests.text;

import java.util.ListResourceBundle;

import junit.extensions.TestSetup;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.source.SourceViewer;

import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.formatter.DefaultCodeFormatterConstants;
import org.eclipse.cdt.core.model.ICProject;
import org.eclipse.cdt.core.testplugin.CProjectHelper;
import org.eclipse.cdt.ui.testplugin.EditorTestHelper;
import org.eclipse.cdt.ui.testplugin.ResourceTestHelper;

import org.eclipse.cdt.internal.ui.actions.IndentAction;
import org.eclipse.cdt.internal.ui.editor.CEditor;

/**
 * Test the IndentAction.
 */
public class IndentActionTest extends TestCase {
	private static final String PROJECT= "IndentTests";

	private static final class EmptyBundle extends ListResourceBundle {
		@Override
		protected Object[][] getContents() {
			return new Object[0][];
		}
	}

	protected static class IndentTestSetup extends TestSetup {

		private ICProject fCProject;
		
		public IndentTestSetup(Test test) {
			super(test);
		}
		
		@Override
		protected void setUp() throws Exception {
			super.setUp();
			
			fCProject= EditorTestHelper.createCProject(PROJECT, "resources/indentation");
			fCProject.setOption(DefaultCodeFormatterConstants.FORMATTER_TAB_CHAR, CCorePlugin.TAB);
		}

		@Override
		protected void tearDown () throws Exception {
			if (fCProject != null)
				CProjectHelper.delete(fCProject);
			
			super.tearDown();
		}
	}
	
	public static Test suite() {
		return new IndentTestSetup(new TestSuite(IndentActionTest.class));
	}

	private CEditor fEditor;
	private SourceViewer fSourceViewer;
	private IDocument fDocument;

	/*
	 * @see junit.framework.TestCase#setUp()
	 */
	@Override
	protected void setUp() throws Exception {
		String filename= createFileName("Before");
		fEditor= (CEditor) EditorTestHelper.openInEditor(ResourceTestHelper.findFile(filename), true);
		fSourceViewer= EditorTestHelper.getSourceViewer(fEditor);
		fDocument= fSourceViewer.getDocument();
	}
	
	/*
	 * @see junit.framework.TestCase#tearDown()
	 */
	@Override
	protected void tearDown() throws Exception {
		EditorTestHelper.closeEditor(fEditor);
	}
	
	private void assertIndentResult() throws Exception {
		String afterFile= createFileName("After");
		String expected= ResourceTestHelper.read(afterFile).toString();
		
		new IndentAction(new EmptyBundle(), "prefix", fEditor, false).run();
		
		assertEquals(expected, fDocument.get());
	}

	private String createFileName(String qualifier) {
		String name= getName();
		name= name.substring(4, 5).toLowerCase() + name.substring(5);
		return "/" + PROJECT + "/src/" + name + "/" + qualifier + ".cpp";
	}
	
	private void selectAll() {
		fSourceViewer.setSelectedRange(0, fDocument.getLength());
	}
	
	public void testUnchanged() throws Exception {
		selectAll();
		assertIndentResult();
	}
	
	public void testSample() throws Exception {
		selectAll();
		assertIndentResult();
	}

	public void testComplex() throws Exception {
		selectAll();
		assertIndentResult();
	}
}